Tables on sunspot‐frequency for 1749–1938

• 1 September 1939
• journal article
• Published by American Geophysical Union (AGU) in Terrestrial Magnetism and Atmospheric Electricity
• Vol. 44  (3) , 247-256
• https://doi.org/10.1029/te044i003p00247

Abstract

Keywords

• 1749
• PUBLISHED
• TABLE
• REPRINTED
• RELATIVE SUNSPOT
• OBSERVATORY
• ASTRONOMISCHE
• MITTEILUNGEN